Hioki E.E. Corporation is a Japanese manufacturer of electrical test and measuring instruments, founded in 1935. Its four main product categories are automatic testing equipment (e.g. circuit board testers), data recording equipment, electronic measuring instruments (power analyzers, LCR meters, resistance meters, battery testers) and field measuring instruments (clamp meters, insulation testers, power quality analyzers). Its products serve electronic components, mobility, infrastructure and maintenance, renewable energy and battery industries, supported by group companies across Asia, Europe, the Middle East and the US.